▎ 摘　　要

Wood/Cu-Fe3O4@graphene/Ni composites with perfect electromagnetic interference (EMI) shielding were prepared via simple electroless method. By adding Fe3O4@graphene (F3G1) with high crystallinity and purity, the conductivity of the composite was greatly improved. The microstructure observation results showed that the micro-nano particles were uniformly distributed on the wood surface, forming a dense coating. The composite exhibited electrical conductivity, high hydrophobic, and low surface roughness, and was evaluated using EMI shielding studies. Micro-nano Cu and Ni particles were combined on the surface of low-cost and sustainable wood. The average electromagnetic interference shielding effectiveness (EMISE) of composites was as high as 96.79 dB in the frequency range of 300 kHz-3 GHz ascribed to the interface-compatible and highly conductive, which demonstrate that wood/Cu-F3G1/Ni was suitable for EMI shielding. The electromagnetic wave absorption value of the composite material reached more than -40 dB. With the increase in frequency, the absorption decreased, but the value was still above -35 dB.